From: Ilya Verbin <iverbin@gmail.com>
To: Thomas Schwinge <thomas@codesourcery.com>,
Jakub Jelinek <jakub@redhat.com>
Cc: Bernd Schmidt <bernds@codesourcery.com>,
gcc-patches@gcc.gnu.org, Kirill Yukhin <kirill.yukhin@gmail.com>
Subject: Re: Offloading compilers' support libraries
Date: Thu, 26 Feb 2015 19:35:00 -0000 [thread overview]
Message-ID: <20150226192018.GB49293@msticlxl57.ims.intel.com> (raw)
In-Reply-To: <20150220194852.GD56550@msticlxl57.ims.intel.com>
On Fri, Feb 20, 2015 at 22:48:52 +0300, Ilya Verbin wrote:
> On Fri, Feb 20, 2015 at 18:05:01 +0300, Ilya Verbin wrote:
> > On Thu, Feb 19, 2015 at 13:17:37 +0100, Thomas Schwinge wrote:
> > > My asumption is that it is always safe to install non-native (that is
> > > cross) GCC installations into the same prefix. (Which would resolve this
> > > problem of clashing file names for target and offloading compilers for
> > > good.)
> > >
> > > So, the next question is, instead of this special handling, why can't we
> > > require the offloading compilers to always be configured as cross
> > > compilers? Or, why is it a requirement that the intelmic offloading
> > > compiler is configured as a native compiler?
> >
> > If I understand correctly, to build a cross compiler, we need to specify a path
> > to the target sysroot, even for x86_64-pc-linux-gnu to x86_64-intelmic-linux-gnu
> > cross. Or is it possible to build a cross compiler without --with-sysroot ?
>
> To be precise, for the cross compiler we need to specify a path to
> --with-build-time-tools (rather than --with-sysroot). The problem is that for
> Intel MIC there are no special as/ld/etc. So, is there an elegant way to build
> a cross compiler with host's build time tools?
Probably one can build an offloading cross compiler as:
configure --target=x86_64-intelmic-linux-gnu --enable-as-accelerator-for=x86_64-pc-linux-gnu --with-build-time-tools=/usr/bin/
?
But I'm getting errors for such configuration :(
In file included from ../../../gcc/libgcc/gthr.h:148:0,
from ../../../gcc/libgcc/libgcov-interface.c:27:
./gthr-default.h:35:21: fatal error: pthread.h: No such file or directory
compilation terminated.
make[2]: *** [_gcov_dump.o] Error 1
make[2]: Leaving directory `/build/x86_64-intelmic-linux-gnu/libgcc'
make[1]: *** [all-target-libgcc] Error 2
make[1]: Leaving directory `/build'
make: *** [all] Error 2
I really want to remove the intelmicemul target, since there is no difference in
the compiler between real and emulated compilation for Intel MIC. The only
difference is which libcoi_host.so is used by liboffloadmic_host.so at run-time.
Thanks,
-- Ilya
next prev parent reply other threads:[~2015-02-26 19:20 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-01 11:58 nvptx offloading patches [3/n], RFD Bernd Schmidt
2014-11-03 22:28 ` Jeff Law
2014-11-04 12:38 ` nvptx offloading patches [3/n], i386 bits RFD Bernd Schmidt
2014-11-04 18:58 ` Uros Bizjak
2014-11-04 21:50 ` Jeff Law
2014-11-05 0:23 ` Bernd Schmidt
2014-11-14 18:42 ` Bernd Schmidt
2015-02-04 11:38 ` nvptx offloading patches [3/n], RFD Jakub Jelinek
2015-02-09 10:20 ` Richard Biener
2015-02-16 21:08 ` Jakub Jelinek
2015-02-16 21:35 ` Richard Biener
2015-02-16 21:44 ` Jakub Jelinek
2015-02-17 10:00 ` Richard Biener
2015-02-18 10:00 ` Jakub Jelinek
2015-02-25 8:51 ` Patch ping Jakub Jelinek
2015-02-25 9:30 ` Richard Biener
2015-02-25 16:51 ` Jakub Jelinek
2015-02-18 9:05 ` nvptx offloading patches [3/n], RFD Thomas Schwinge
2015-02-17 13:32 ` Ilya Verbin
2015-02-17 15:39 ` Jakub Jelinek
2015-02-17 16:21 ` Joseph Myers
2015-02-17 16:40 ` Jakub Jelinek
2015-02-18 9:12 ` Thomas Schwinge
2015-02-18 10:27 ` Jakub Jelinek
2015-02-18 11:34 ` Jakub Jelinek
2015-02-18 12:10 ` Thomas Schwinge
2015-02-18 12:35 ` Jakub Jelinek
2015-02-19 10:50 ` If we're building an offloading compiler, always enable the LTO front end (was: nvptx offloading patches [3/n], RFD) Thomas Schwinge
2015-02-19 10:53 ` Jakub Jelinek
2015-02-20 9:42 ` Thomas Schwinge
2015-02-19 10:20 ` nvptx offloading patches [3/n], RFD Bernd Schmidt
2015-02-19 12:02 ` Offloading compilers' support libraries (was: nvptx offloading patches [3/n], RFD) Thomas Schwinge
2015-02-19 12:11 ` Offloading compilers' support libraries Bernd Schmidt
2015-02-19 12:19 ` Thomas Schwinge
2015-02-20 15:35 ` Ilya Verbin
2015-02-20 19:59 ` Ilya Verbin
2015-02-26 19:35 ` Ilya Verbin [this message]
2015-02-20 9:33 ` Offloading compilers' libgcc installation (was: nvptx offloading patches [3/n], RFD) Thomas Schwinge
2015-02-20 19:32 ` Ilya Verbin
2015-03-10 12:35 ` Offloading compilers' libgcc installation Thomas Schwinge
2015-04-27 16:15 ` Thomas Schwinge
2015-04-27 16:16 ` Jakub Jelinek
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